TSI Test in Massachusetts
TSI Test can be requested without a referral, and this overview covers what to expect. The TSI (Thyroid-Stimulating Immunoglobulin) test is a blood test that measures antibodies that can overstimulate the thyroid gland. It is most often ordered to help diagnose Graves' disease, an autoimmune condition that causes hyperthyroidism, and to monitor treatment response. This page covers the tsi test for people in Massachusetts, in New England, from what it measures to how to arrange a draw.
- Sample type
- blood
- Category
- Thyroid
- Turnaround
- 1-3 business days
- Price
- $119
- Referral
- Not required
The TSI (Thyroid-Stimulating Immunoglobulin) test is a blood test that measures antibodies that can overstimulate the thyroid gland. It is most often ordered to help diagnose Graves' disease, an autoimmune condition that causes hyperthyroidism, and to monitor treatment response.
What it measures
- TSI level — The amount of thyroid-stimulating immunoglobulin in the blood; higher levels suggest Graves' disease.
- TSI index — A calculated ratio that compares your TSI level to a reference standard, helping interpret results.
- TSI percentage — Sometimes reported as a percentage of a normal reference range, indicating relative antibody activity.
- Thyroid-stimulating antibody (TSAb) — A related antibody that may be measured alongside TSI to assess thyroid stimulation.
Who it is for
A doctor typically orders a TSI test when you have symptoms of hyperthyroidism, such as unexplained weight loss, rapid heartbeat, or tremors, or when other thyroid tests suggest Graves' disease.
Preparation
No fasting or special preparation is needed for a TSI test. You can eat and drink normally before your blood draw.
Results and what they mean
Results are usually reported as a number or percentage, with a reference range provided by the lab. Your clinician will interpret your TSI level along with your symptoms and other thyroid tests. This information is general and not a substitute for medical advice.
Requesting the TSI Test in Massachusetts
Order online, choose a certified collection site in Massachusetts, and review results through a secure portal. No referral is required, and orders are processed confidentially. Access across New England is tightly woven, so confirming a site ahead of time is worthwhile.
Frequently asked questions
What does a high TSI level mean?
A high TSI level often points to Graves' disease, but only your doctor can confirm a diagnosis after reviewing all your test results and symptoms.
Do I need to fast before a TSI test?
No, fasting is not required. You can eat and drink as usual before the blood draw.
How long does it take to get TSI test results?
Results are typically available within 1 to 3 business days, though this can vary by laboratory.
Can TSI levels change over time?
Yes, TSI levels can rise or fall with treatment or over the course of the condition. Your doctor may repeat the test to monitor changes.
TSI Test by city in Massachusetts
- TSI Test in Boston
- TSI Test in Springfield
- TSI Test in Worcester
- TSI Test in New Bedford
- TSI Test in Leominster
- TSI Test in Cambridge
- TSI Test in Lowell
- TSI Test in Brockton
- TSI Test in Quincy
- TSI Test in Lynn
- TSI Test in Fall River
- TSI Test in Newton
- TSI Test in Lawrence
- TSI Test in Somerville
- TSI Test in Framingham
- TSI Test in Haverhill
- TSI Test in Malden
- TSI Test in Waltham
- TSI Test in Revere
- TSI Test in Medford
- TSI Test in Taunton
- TSI Test in Chicopee
- TSI Test in Peabody
- TSI Test in Methuen Town
- TSI Test in Everett
- TSI Test in Attleboro
- TSI Test in Salem
- TSI Test in Pittsfield
- TSI Test in Beverly
- TSI Test in Fitchburg
- TSI Test in Marlborough
- TSI Test in Woburn
- TSI Test in Westfield
- TSI Test in Chelsea
- TSI Test in Holyoke
- TSI Test in Watertown Town
- TSI Test in Gloucester
- TSI Test in Melrose
- TSI Test in Northampton
- TSI Test in Gardner